Type-writer.



J. W. DUNLAP. TYPE WRITER. APPLICATION FILED HAY 2, 1910*.

Patented Nov. 21,1911.

5 SHBETS-BHEBT l. /j/z W f'f o g/ if l l "ig" -e-ya -Af- J. W. DUNLAP.`

' TYPE WRITBR. APPLIGATION HLBD'MAY 2,1910.

Patented Nov. 21, 1911.

5 SHEETS-SHEET 2.

J. W. DUNLAP.

TYPE WRITER.

' APPLIATIONFILED MAY 2; 1910. 1',OO9,

. Patented No'v'. 21, 119:11.

5 SHEETS-SHEET 3.

J. W.l DUNLAP. TYPE WRITER.. APPLICATION FILED MAY-2, 1910.

1,009,392. ,rentedNov. 21, 1.9i 1.

5 SHEETS-SHEET 4'.

J. W. DUNLAP.

TYPE WRITER.

APPLIUATIOIN FILED MAY 2, 1910.

1,009,392. Patented Nov. 21, 1911.'

5 SHE ETS-SHEET 5.

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v'UNITED STATES" PATENT orrron.

JOHN 1V.` DUNLAP, 0F CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF T0 CLABENCEO.

l i l TRAVIS, OF CHICAGO, ILLINOIS.

` TYPE-WRITER.

Speeication of Letters Patent.

Application led May 2, 1910. Serial. No. 559,032.

To all whom it may concern:

Be it known that I, JOHN W. DUNLAP, a citizen of the United States, residing at Chicago, in the county 'of vCook and State vof Illinois, have invented certain new and useful Improvements in Type-Writers,'of which` Iconstruction, combination and arrangement of parts in a carriage-shifting mechanism for book-typewriters.

Another object is to provide improved ribbon-feeding andv reversing mechanisms.

Other` and further objects will appearl in the specification and be specifically pointed out in the claims, reference being had to the accompanying drawings exemplifying the inventlon, and in whichn Figure 1 is .atop plan view of a rbooktypewriter constructed in accordance with the principles of this invention. Fig. 2 is a sectlon on the line II-JII lof Fig. 1, with the parts in 'normal position. Fig. 3 is a similar view with the carriage in raised position, the endbar of the line spacing frame,

together with ,parts carried thereby being removed inl order yto more clearly show some ofthe interior mechanism of the machine. Fig.y 4 is a section on the line IV-IV of Fig. 2.' Fig. 5 is a section on the line Vf-V of Fig. 4. Fig. 6 isasection on the line VI-VI of Fig. 4. Fig. 7 is aside elevation of the line-spacing mechanism. AFig. 8 is atop plan view of the same."l Fig@ 9 is a section on the line rIX--IX of Fig. 8. Fig. 10 is a detail section through the front members of the line spacing frame and the'earriage.

Referring to Fig. 1, the partsof a bookltypewriter shown therein as an exemplification in one embodiment of the present invention, comprises in general with well known machines of the same kind, a platen 1 provided with line-spacing racks 2 and 3. The platen 1 may furthermore be provided with suitable guides or ways for reciproframefhaving rotatably mounted thereon 'aspindle 5 for mounting the feed pinions 6--6.` j Feed pinions 6 mesh with the feed racks 2 and 3 for the line-spacing movement.

Referring more especially to Figs. 1, 2, 3

` andfi, a carriage frame comprising end bars 7 and 8 rigidly connected in front by an; angle bar 9, is reciprocably mounted'onthe line-spacing frame to traverse the platenl by having said end bars'7 and 8 sli'dably Patented Nov. 21, 191i.y

cably mounting va line-spacing frame 4i, said i engaging a slide bar lO'forming a rigid:y l l portion of the line-spacing frame 4. i The frontl bar 11 of the carriage is preferably constructed in the form of an angle bar upon the inwardly projecting arm 12 of which issecured a hold 13 of substantially U-shape', the lower depending end 14 of which exitends outwardly under the frontmemberof the line spacing frame and limits the -u ward movement of the carriage relative y to the line spacing frame. The front'memv` ber of the line spacing frame includes the angle bar ,seetion'9, with one arm ofjsaid section projecting inwardly to form a hori-i zontal run-way for rollers 16 whichare roaov tatably mounted on said carriage. Rigidly l i secured to the bottom of said front member riage. The hold 13 permits just enough play between the carriage and line-spacing frame as will permit the pinion. 19 to be lifted out of engagement with the rack 13 to permit the ready adjustment in position of the carriage upon the line-spacing frame.

This' adjustment can be effected by simply liftingv Q i upwardly the shifting lever and spacing bar to be presently referred to.

Referring now to Figs. 7, 8, and- 9, the

line-spacing mechanism which is arranged f at the lower left hand corner of the line spacing frame 4,.as shown-in Fig. 1, c0n. sists of means for rotating the spindle .5 on said frame to move it along the racks 2 and 3. Said mechanism is adapted to be operated by hand, or automatically by theshifting movement v of the carriage and preferably consists of a ratchet 20 secured to the spindle 5 in any suitable mann er. Oscillatably mounted on the spindle 5 is al hand lever Q1 provided with a pawl 22 pressed inwardly by a relsilient member 23. Also oscillatably mounted on the spindle 5 is a shield or guard 24 which, by means of a thumb hold 25 mayv be interposed between the ratchet Q0 and the pawl :22 to prevent such pawl from engaging the said ratchet. A comb-like piece 2G, which is rigidly secured to the shield or guard 24, is resiliently engaged by a spring .27 which resiliently holds said guard inany position to which it may be adjusted. The hand lever a'zZl when pushed downwardlyY is limited in its downward movement by a lug 2S (see Fig. T). lt will therefore be seen that owing tothe limited `movement of'the lever :21, the :guard .24 may be disposed in such positions as will prevent the pawl engaging the ratchet :2O altogether, or will permit said pawl to engage the ratchet during a sutli` cient portion of its movement to move it one tooth, or tomove it two or more teeth, as may be desired. The line-spacing movement is therefore an adjustable one. Oscillatably mounted on the spindle 5 and rigidly secured to the hand leveiwl, is a rearwardly projecting `lever 2t), the movement of which is resiliently resisted by a spring 30 connected at one endto a projection 3l rigidly .mounted on the line-spacing 'frame By means of links 32, 33, the latter being pret'-, erably in the iorm et' a bell crankd level', the lever 2t) is operably connected with a movable abutment 34, which is reciproeably mounted on the front guide bar '9 of the linespacing frame in theline of movement of the carriage on said frame. lt will there tore be seen that `upon eachreturn movement of the carriage, the linespacing mechanism may be operated by said carriage.

ltei'erring more especially to Figs. l, 2 and ZS, the traversing carriage is provided with a pair of side trames or standards 3f and .'lt rigidly mounted thereon. A key and type-bar segment denoted generally by the reference character 37 is swingingly mount ed between said side frames by pivotal con nei-lions at 3S and' 39. Said segment is thereby adapted to be shifted from one case position tov another to cause the,typebars to strike the platen in alinement. Slidably engaging the inner faces ot the side framesi 255 and :lo are plates 40 and 41 provided with pins 42 and itil projectiing tlitlo'Liigliai-enate slots 44 in said side frames` 3o and 3b'. livotally connected to the outer ends of said pins l?. and 42S are links 45 and 46, which are in turn pivotally connected to the outer ends otcrank arms 47 and 48 respectively, said crank arms being rigidly mounted on an oscillable shalt `4t). For oscillating Said' sha ft 4t) to shift. the carriage any suitable shitting lever may be provided, said lever in the embodiment shown in t-li`draw1ngs comprising a substantially T-shaped lever 50 having its shank rigidly connected to the shaft 49 and provided on the outer ends of the cross bar with finger pads 5l and 52. A universal bar 53 is pivotally mounted at its outer ends on the pivots 38 and 39 and provided in front with a projection 54 (see Figs. 2 and 3) which bears against a spac ing lever 55, the outer end of said lever 55 being provided with a spacing bar 56.

Referring now to Figs. 4, 5 and 6; the construction and arrangement of arts in the spacing mechanism will be un erstood. The spacing lever 55 is rigidly secured to an oseillatable shaft 57 mounted in supports 58 and 59 depending from the under side of the segment 3T. The crank arm 60 rigidly secured to the shaft 5T. is pivot-ally connect-` ed at its outer end with a lilik 61 by means of which it is adapted to oscillate the dog o2 of the escapement mechanism. Said dog e2 comprises a vertically disposed bar portion provided with upper and lower bearing pins (53, G4, by means of which it is pivotally mounted ma rigid support 65 depending from the segment 37. Said dog-is, moreover, provided with a rigid projecting portion titi which engages the teeth of a ratchet 6T, said ratchet 67 being connected in a manner presently to be described with a rack and pinion feed for effecting the traverse feed of the carriage. Pivotally mounted upon the dog t3? is a pawl 68, which. when it is not held in lowered position shown in full lines in Fig. 5 by the ratchet (3T, is drawn upwardly into the position shown in dotted lines by a spring 69. 'lhe lateral projection T0 rigid with the projecting portion tti of said dog, serves as a stop for the pawl GS. Rigidly connectedto' the dog t'il is an angle bracket T1, `to the projecting horizontal portion of which the link tl is pivotally connected. A spring, or other resilient member T2 is connected at one end to the outer end of the horizontal arm of the bracket 71 and at itsother end to a depending har 73 rigid with the segment 3T. Said spring 72 acts normally to hold the projecting portion of the dog out ot' engagement with the ratchet G7, so that the pawl ($8 is normally held in lowered position shown in Fig. 5. lVhen the universal bar of the spacing bar 5G is actuated, the rigid portion 66 of the'dog is swung into enga,f ,rementI with a tooth of the ratchet G7 when the pawl (3S. swings upwardly into dotted line ositionshown 1n Fig. 5. in which position 1t is adapted upon the return of the several parts to normalpo sitionI to be engaged by the next tooth to feed'thc carriage. l

Pivotally mounted below on the. support 65,-is a pair of se nnental gears74, '75,the latter being rovi ed with an arm 7G connected by a link 77 with the-oscillating dog los,

62; sov 4asv-to partake of` all ,its `movements.v

Ri'gidlljfconnected toA tb.e gear 74 a rem" i wardl projecting. lever 78 lto `the outer end of which is pivotal'ly connected a link 79 for recip'roeating a" ribbon' kholder 80 through which Ais fed a ribbon 8.1. `Said ribbon holder 80 lis"reeiproeablymounted on a part rigid with the segment 37. Referring more `especiallv to Figs. 1, 2and 3, the ratchet 67 is provided witha stub shaped projection 82, which is connected by a universal coupling 83 with an extensible shaft 84,.said extensible shaft being connected bya universall coupling 85 with a feed pinion which meshes ,with the rack 18., as hereinbefore pointed out.`

As best shown in Figs. 1, 2 and 3, the ribbon feeding and reversing mechanism comprises the spools 86, 87 for holding the ribbon, said spools being rovided around their peripheral edges with ratchet teeth, and means for rotating said spools step by step of B ig. 1, a spring pawl 88 carried by a sup-- port 80, which is pivotally mounted at 90 upon an arm 91, in turning pivotallyinounta depending support 93 rigidil ed at 92 upon with the type bar segment 37. In order to' provide means for oscillating the arm 91 u wardly and downwardly, an angle bar 04 rigidly connected to land depending from the universal bar 53, is provided at its outer end with a pin .05, whielifengages the arm` 91, so that at eacli movement of the universa'l bar (33, the spring pawl 88 is moved iipwardlyvand downwardly to rotate the spool 86. rThe spring pand-.88, in conjunction with a similar.springlpawl upon,the opposite side of. the carriage, is movable -.into and out-oifoperativeengagement with the ribbon spools by; means for oscillating the supports S0 toward and away from said spools..4 Said means consists of a link preferably int'he form of a WireDG, which pivotallyconnected aty itsxends with the supports 89. The wiretl is'bcnt intermediately 'of'its e'iids substantially' in U shape, and a ribbon feed ,shifting lever 97 is reciprocabl'y mounted onthej-segnient 37 with its ends abutting?. against the parallel ,portions 08, 09of the'wii'e 0G. Said shifting lever 97 is provided with an offset portion at the center, atilaptingvsaid lever to be gripped between theiinge'r and thumb of the operators hand. "it: i Y i The herein described and illustrated construction, combination and' arrangement of parts, has been ,disclosed as an exemplifica- `ztionL-of the invention, and I therefore do not 'wish to be limited' to the specific construction and arrangement of parts hereinbefore referred to.

On the left end bar 7 of the carriage is rigidly mounted a bracket 100, upon the outer end of which is supported a vertically v.projecting rod 101, by

said means comprising on the left side means of which the carriage may be drawn from right to yleft inA returning said carriage to vinitial position. `Pivotally mounted on is a retaining'lever 102 which is provided on its'outer end with'a handle 103.l Said lever V102 is provided with a. shoulder at 1045 .adapted to fit' in behind the crank arm 4 7' when the type bar segment is in raised position on the carriage.l What I claim is- `1. yIn a book typewriter, the combination offa feed iiick1,-a reciprocating carriage havcapement device.

3. In a., book typewriter, the combination with a main frame having a feed rack, of a carriage recprocable on said frame and having a pinion meshing with said rack, a type bar segment movable toward and away from said carriage, an escapement wheel carried by saidsegrnent, escapement dog mechanism mounted on said segment and operatively related to said es'capement wheel, and an extensible shaft, said shaft being provided with a universal connection at one end wit-li said escapement wheel and at the otherend with said pinion on the carriage.

4. In a book typewriter,the combination with a frame having a feed rack, a carriage reeiprocable on said frame and having a. pinion meshing with said rack, a type bar segment inovabletoward and away from said carriage, said segment being provided with a universal bar and a feed escapement operative'ly related thereto, and an extensible shaft -connect-ing said cseapement with said pinion, said shaft being provided with iniversal joints adjacent each end.

5. In a book typewriter, the combination with a frame having a feed rack, a carriage .reciprocable on said frame and having a pinion meshing with said rack, a type bai segment movable angularly toward and away from said carriage, said segment being provided with an escapementvwhecl, a feed dog mechanism coperating therewith, and an extensible flexible connection between said escapement wheel and pinion.

0. In a book typewriter, the combination with a frame having a feed rack, a carriage recipro'cable on said' frame and having a pinion meshing with said rack,- a type bar the bracket 100- .segment pivotally mounted on said carriage pinion out of engagement with said feed rack.

7; In a book typewriter, the combination with a frame having a feed rack, a. carriage rreciprocnble on said frame and having) a ar pinion meshing with said rack,4 a type segment pivot-ally mounted on said carriage j and provided Wit-h a feed escapement mechanism, a lexible extensible connection connecting said escapement with said pinion, said carriage being pivotally mounted on said `Jrrame to permit the removal of said pinion out of engagement 4with said feed rack, and -means for limiting the pivotal movement of said carriage.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 18th .day of April A. D. 1910. y 9

y y .JOHN` W. DUNLA?,

Wit-nesses:y i

M. wolmwmg, A. O. KNIGHT.` 

